Active probe pod in logic analyzer

摘要

An active probe pod (4) to be used with a logic analyzer (5) is disclosed. The active probe pod may be connected to the logic analyzer having a FPGA decoder (51) and to a DUT circuit board (1). The active probe pod may include a LVDS differential wire component (42) connectable to the FPGA decoder and a front-end circuit board (411) for capturing a weak signal input from the DUT circuit board. The front-end circuit board is adapted not to transmit the captured weak signal input over a long-distance signal transmission path, which helps minimize interferences with the weak signal input, while outputting a LVDS differential signal to the FPGA decoder for decoding. As the front-end circuit board is used for capturing the weak signal input, which falls within the category of one short-distance signal transmission, the signal reflection may not take place, without affecting the signal quality and/or attenuating the signal strength.